Product Applications:

Electric Contact Pressure Gauges are widely used in industrial enterprises such as petroleum, chemical processing, metallurgy, and power plants, as well as in electromechanical equipment, to measure the pressure of various gases, liquids, and other media. When used with appropriate electrical devices, these instruments enable automatic control and alarm signaling for the measured pressure system. 

Working Principle:

The measured medium enters the pressure measurement system through the instrument connection and acts on the Bourdon tube. The resulting displacement of the tube end is transmitted through the gear mechanism, driving the pointer and moving contact to touch the fixed contact on the preset pointer (upper or lower limit). This opens or closes the control circuit to achieve automatic control or alarm signaling.

Technical Specifications:

Applicable Standard: JB/T9273--1999

Dial Diameter: φ63/100/150/160 (mm)                                                                           

Accuracy Class: φ63  2.5%  φ100 (≤0.1MPa)  2.5%   φ100/150/160  1.6%, Setpoint Accuracy: 4%                  

Measurement Range: -0.1–0 to -0.1–2.4MPa, 0–0.1 to 0–100MPa                    

Protection Rating: Standard Non-Liquid-Filled Type IP54; Liquid-Filled Type IP65        

Operating Ambient Temperature: -20 to 70℃                                               

Operating Medium Temperature: ≤100℃                                              

Temperature Effect: When the operating temperature deviates from 20±5℃, the change in setpoint error does not exceed 0.6%/10℃           Scale Unit: MPa (bar/psi optional)        Vibration-Resistant Liquid-Filled Type: Special Filling Oil

Maximum Operating Voltage: AC380V or AC220V          

Maximum Current: 1A                                

 Contact Power Rating: 30VA                          

Contact Material: Silver-Nickel Alloy for ≥110V; Gold for ≤36V                    

Number of Contacts: 1 or 2 (Optional)                

Instrument Housing: Stainless Steel                                       

Process Connection Material: SUS304 (SUS316 Optional)                             

 Bourdon Tube: SUS316  

Instrument Movement: SUS304 

Instrument Window: Standard Glass or Explosion-Resistant Double-Layer Safety Glass (Optional)   Pointer: Black Aluminum     Dial: Aluminum, White Background with Black Markings   

 Connection Type: M20X1.5 or Customized According to Special Requirements      

Operating Pressure and Application Range:    

Dial Diameter φ63mm: Static Pressure 3/4 × Full Scale; Dynamic Pressure 2/3 × Full Scale   

Dial Diameter φ100/150/160mm: Static Pressure 3/4 × Full Scale; Dynamic Pressure 2/3 × Full Scale; Instantaneous Pressure 1.3 × Full Scale